Cheng Kei-Chun Davis, Tse Ming-Leung Vincent, Zhou Guiyao, Pun Chi-Fung Jeff, Chan Wing-Kin Edward, Lu C, Wai P K A, Tam Hwa-yaw
1Photonics Research Centre, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China.
Opt Express. 2009 Feb 16;17(4):2080-8. doi: 10.1364/oe.17.002080.
We propose a new hole-assisted polymer optical fiber design to eliminate the influence of dopant diffusion and to increase the UV writing efficiency in fiber Bragg grating inscription. The optical waveguide is formed inside a solid core surrounded by a ring of 3 large air holes in enhanced UV photosensitive PMMA with double-cladding. We determined a map of the single-mode and multi-mode phase transitions using a finite-element- based vectorial optical mode solver. We obtained a wide range of geometrical configuration for the single-transverse-mode (HE11) propagation in the visible. The design is optimized to operate at the minimum optical loss wavelengths of 580 nm and 770 nm.
我们提出了一种新型的空芯辅助聚合物光纤设计，以消除掺杂剂扩散的影响，并提高光纤布拉格光栅写入中的紫外写入效率。光波导形成于一个实心纤芯内部，该纤芯被增强紫外光敏的双包层聚甲基丙烯酸甲酯（PMMA）中的一圈3个大空气孔包围。我们使用基于有限元的矢量光学模式求解器确定了单模和多模相变图。我们获得了在可见光中单横向模式（HE11）传播的广泛几何配置。该设计经过优化，可在580 nm和770 nm的最低光损耗波长下运行。
